Sulaiman, Yoyo, Balai Penelitian Tanah, Kebun Percobaan Tamanbogo, Jl. Raya Sukadana, Purbolinggo 34192, Lampung Timur, Indonesia

• Vol 13, No 1: January 2008 - Articles
  Manures Effectivity to Enhanced the Availability of Phosphorus, Crops Growth and Yield of Rice and Corn in Acid Upland Soil
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